Firearm.



B. F. CASE.

FIREARM.

APPLIUATION FILED MAY 14, 1912.

Patented Oct. 8, 1912.

WITNESSES 27 BENJAMIN FRANK CASE, OF MITCHELL, INDIANA.

FIREARM.

Specification of Letters Patent.

Patented Oct. 8, 1912.

Application filed May 14, 1912. Serial No. 697,299.

To all whom it may concern: 1

Be it known that I, BENJAMIN FRANKLIN Own, a citizen of the UnitedStates, and a resident of Mitchell, in the county of Lawrence and Stateof Indiana, have invented a new and Improved Firearm, of which thefollowing is a full, clear, and exact description.

My invention has for its object to provide one having an extractormovable longitudinally of the barrel, and rotatable there with on a studmounted on the breech piece, so that when the barrel is rotated theextractor will engage a member on the stud, which will hold theextractor against movement when the barrel is moved longitudinally awayfrom the breech piece, the extractor in this way removing from thebarrel the shell.

Additional objects of the invention will appear in the followingcomplete specification, in which the preferred form of the invention isdisclosed.

In the drawings similar characters of ref erence indicate correspondingparts in all the views, in which- Figure 1 isa side elevation partiallyin section of a firearm embodying the invention, showing the firearmready to be fired; Fig. 2 is a sectional plan view of the firearm,showing the extractor ejecting the shell; Fig. 3 is a sectional view onthe line 3--3 of Fig. 1; Fig. 4 is a sectional view on the line 4-4 ofFig. 2; and Fig. 5 is a sectional View on the line 55 of Fig. 2.

By referring to the drawings it will be seen that the firearm has abreech piece 5, in which is secured a stud 6, the barrel 7 having aplate 8 with an opening 9, through which the stud 6 is disposed, thisplate 8 also having grooves 10','which are connected with the opening 9,the key members 11, which are secured to the stud 6 being adapted tomove in the said grooves 10 when the barrel is rotated on the stud tothe position shown in Figs. 2 and 4 of the drawings, these key members11 being normally engaged by the cam members 12, which are secured tothe front face of the plate 8, as shown in Fig. 1 of the drawings.Secured to the barrel 7, and spaced from the plate 8, there is a flange13, having an opening in which the stud is dispmed, the barrel 7 beingsupported by this flange 13. and the plate 8 when it is rotated on thestud 6 to the position shown in Fig. 2. In the barrel Tthere is a groove11, in which is disposed the ejector 15. the flange 16 of the extractorbeing normally disposed in a recess 17 in the barrel. This extractor 15has an offset portion 18, with a recess 19, the forward terminal. 20 ofthe extractor 15 be ing disposed. in a guideway in the flange 13. Therecess 19 is provided to receive the lug 21, on the stud 6, when thebarrel with the extractor is rotated on the said stud so that when thelug 21 is disposed in the recess 19 the extractor 15 will be heldagainst movement longitudinally of the stud, and when the barrel ismoved forward, as shown in Fig. 2 of the drawings. the flange 16 of theextractor, which engages the rim 22 of the cartridge 23, will serve toextract the cartridge from the barrel.

In the lower portion of the plate 8 there is a recess 24, in which thebolt 25 on the finger loop 26 is normally disposed. this bolt 25, whenit is disposed in the said recess 24, serving to hold the barrel infiring position. When the firearm has been fired, this bolt 25 is pulledrearwardly, which withdraws the bolt 25 from the recess 2t in the plate8, when the barrel 7 is rotated to the right, as shown in Fig. 2 of thedrawings. When the barrel has been so-rotatcd. the cam members 12 aremoved away from the key members 11. and the grooves 10 are moved inposition to receive the key members 11. so that when the barrel 7 ismoved forward, the key members 11 will travel in the grooves 10, tosupport the rear of the barrel against rotary movement when thecartridge 23 is extracted from the barrel by the flange" 16 on theextractor 15, this extractor 15 being prevented from moving forward withthe barrel 7 by means of the lug 21, which is disposed in the recess 19in the extractor 15, ash-as been described.

A collar 29 is secured to the stud 1', against which the cam members 12st iketo limit the forward movement of the barrel relatively to the studG and the brow-b piece 5. The spring 27. which is held against theflange 13 by the nut sci-"cs llll to more the tlange 13 and with it thebarrel T rearn'ardly, which will free the key members 11 from thegrooves 10, and when the said key members have been freed from thegrooves it. the rotation of the barrel 7 on the studs (5 will cause thecams to ride on the inner ends oi the key members ll, to pre s the camsl2, and with the cams the plate rearwartlly. and against the breeghpiece.

llaving thus described my invention, I. claim as new and desire tosecure by Letters Patent:

l. A firearm l'laving a breech piece, a stud secured to the breechpiece, a barrel having two members FPLHZH'] apart with ori- [ices inwhich the stud is disposed, there being EXll'zictfil grooves in themembers, an extractor disposed in the grooves, and having a set oti'portion with a recess, and a member on the stud f r engaging the ewetractor at the recess. when the barrel is rotated on the ind to?"holding the extractor against movement vrith the barrel when the barrelis moved longitudinally relatively to the stud.

2. A firearm having a breech piece, a stud secured to the breech piece,a barrel having a plate with an opening through which the stud isdisposed, there being a groove in the plate extending to the opening,resilient means for holding the barrel yielding-1y toward the breechpiece, a can in the front :l'ace ot' the plate at one side of thegroove, a key on the stud or moving in the groove when the barrel ismoved away from the bremrh piece, the cam engaging the key for holdingthe barrel toward the breech piece when the barrel is moved rearwardiyto a position with the plate free from the key, and the barrel isrotated.

3. A firearm having a breech piece, a stud secured to the breech piece,a barrel mounted to rotate on the stud, and to move longitudinallyrelatively to the breech piece, an extractor for the barrel mounted torotate therewith and to move longitudinally relatively to the barrel,and lug on the stud with which the extractor is adapted to engage, n henthe barrel is rotated for bolding the extractor against movement whenthe barrel moved away from the breech piece. resilient means for holdingthe barrel yieldingly toward the breech piece, and means for locking thebarrel to the breech piece in osition for firing.

4. A rearm having a breech piece, a stud secured to the breech piece, abarrel having a plate at its breech with an opening through which thestud is disposed, and a recess, a member spaced from the plate securedto the barrel and having an opening through which the stud is disposed,there being ax;- tfxtractor groove in the barrel, an

extractor in the groove, 21 member on the stud with. which the extractorengages when the barrel with the extractor is rotated on the stud 'forholding the extractor against longitudinal movement with the barrel, anda member on the breech piece. having a bolt normally disposed in therecess.

- 5. A firearm having a breech piece, a stud secured to the breechpiece, a barrel having a plate with an opening through which the stud isdisposed, there beino' a groove in the plate extending to the opening, acam on the front face of the plate at one side of the groove, and a keyon the stud for moving 1n the groove when the barrel is moved away fromthe breech piece. the cam engaging the key for holding the barrel towardthe breech piece when the barrel is moved rearwardly to a position withthe plate free from the key and the barrel is rotated.

6. A firearm having a breech. piece, a stud secured to the breech piece,a barrel having a plate with an opening through which the stud isdisposed, there being a groove in the plate extending to the opening, anextractor for the barrel mounted to rotate therewith, and to movelongitudinally relatively to the barrel, means on the stud with whichthe extractor is adapted to engage when the barrel is rotated forholding the extractor against movement when the barrel is moved awayfrom the breech piece, a cam on the front face of the plate at one sideof the groove, and a key on the stud for movin in the groove when thebarrel is rotate and is moved away from the breech piece, the camengaging the key for holding the barrel toward the breecn piece when thebarrel is moved rearvvardl to a position with the plate free from t ekey and the barrel rotated to firing position.

barrel mounted to move laterally and longitudinally relatively to thebreech piece, an extractor for the barrel mounted to move laterallytherewith and to move longitudi- Which the extractor is adapted to enga0 when the barrel is moved laterally for bolding the extractoragainstmovement when the barrel is moved away from the breech piece, means forholding the lug in posimeans for holding the barrel towst'rd the breechpiece, and means for locking the barrel to the breech piece in positionfor firing.

8. In a firearm having a breech piece, a barrel mounted to movelaterally and longitudinally relatively to the breech piece, a membersecured to the barrel and having a recess, there being an extractorgroove in the barrel, an extractor in the groove, a member with whichthe extractor is adapted to one? when the barrel with the extractor 105,7. In a firearm having a breech piece, a

nally relatively to the barrel, a lug with tion relatively to the breechpiece, resilient is moved laterally relatively to the breech Intestimony whereof I have signed my piece for holding the extractoragainst 1on name to this specification in the presence of ltudinalnhovement with the barrel, means two subscribing witnesses.

1 01' holding the member in position rela- BENJAMIN FRANK CASE. 5 tivelyto the breech piece, and a member on \Vitnesses:

the breech piece havlng a bolt normally dis- HARRY CHAPPLE,

posed in the recess. CALVIN Fame.

Copies of this patent may be obtained for five eents each, by addressingthe "Commissioner of Patents,

Washington, D. G." V

